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Eminence
ALPHA8A
Item #ALPHA8A
List Price:
$54.99
Your Price:
$49.99
$49.99
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Description
Specification
Video
Manual
Review
ALPHA8A
Recommended for professional audio mid-range applications in a sealed cabinet, or as a mid-bass in a vented satellite enclosure.
Nominal Basket Diameter: 8", 203.2mm
Nominal Impedance*: 8 ohms
Power Rating**
Watts: 125W
Music Program: 250W
Resonance: 73Hz
Usable Frequency Range: 58Hz - 5kHz
Sensitivity***: 94dB
Magnet Weight: 20 oz.
Gap Height: 0.25", 6.35mm
Voice Coil Diameter: 1.5", 38.1mm
Thiele & Small Parameters
Resonant Frequency (fs): 73Hz
DC Resistance (Re): 5.3
Coil Inductance (Le): 0.44mH
Mechanical Q (Qms): 4.6
Electromagnetic Q (Qes): 0.68
Total Q (Qts): 0.59
Compliance Equivalent Volume (Vas): 17.7 liters / 0.6 cu.ft.
Peak Diaphragm Displacement Volume (Vd): 67cc
Mechanical Compliance of Suspension (Cms): 0.28mm/N
BL Product (BL): 7.8 T-M
Diaphragm Mass Inc. Airload (MMs): 17 grams
Efficiency Bandwidth Product (EBP): 107
Maximum Linear Excursion (Xmax): 3.2mm
Surface Area of Cone (Sd): 210 cm2
Maximum Mechanical Limit (Xlim): 7.1mm
Mounting Information
Recommended Enclosure Volume
Sealed: 5-7 liters / 0.18-0.25 cu.ft.
Vented: 16.7-25.5 liters / 0.59-0.9 cu.ft.
Driver Volume Displaced: 35.3 cu.in. / 0.58 liters
Overall Diameter: 8.24", 209.2mm
Baffle Hole Diameter: 7.13", 181mm
Front Sealing Gasket: Fitted as standard
Rear Sealing Gasket: Fitted as standard
Mounting Holes Diameter: 0.22", 5.5mm
Mounting Holes B.C.D.: 7.75", 196.9mm
Depth: 3.25", 83mm
Net Weight: 4.3 lbs, 1.9 kg
Shipping Weight: 5.1 lbs, 2.3 kgs
Materials of Construction
Coil Construction: Copper voice coil
Coil Former: Polyimide former
Magnet Composition: Ferrite magnet
Core Details: Vented core
Basket Materials: Pressed steel basket
Cone Composition: Paper Cone
Cone Edge Composition: Cloth cone edge
Dust Cap Composition: Solid composition paper dust cap
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